I accidentally left "share" selected on one that I didn't intend to share and had poor quality.?ÿ I got a notice saying the minimum requirements for OPUS-S sharing were:
70% of observations used
70% of ambiguities fixed
0.04 m longitude range
Other parameters were ok so it didn't give me thresholds for them.
But a web page at NGS https://www.ngs.noaa.gov/OPUS/about.jsp?ÿ has some tighter and some looser criteria.?ÿ Not consistent.
While there are no absolute rules, most accurate OPUS solutions contain the following:
- orbit used = precise or rapid
- > 90% observations used
- > 50% ambiguities fixed
- Static: overall RMS < 3 cm, peak to peak errors < 5 cm.
?ÿ
from farther down the same page-
?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ?ÿ
Share Your OPUS Solution
??
it's simple, upload to OPUS using Yes, Share& the following:
Careful field procedures
- 4+hour GPS data file
- verify antenna type and height, orient antenna north and plumb
- optional: observer field log
- VIDEO: Best Practices for Minimizing Errors during GNSS ...
- LESSON: https://www.meted.ucar.edu/training_module.php?id=1216#.WT_T3cYpCU k">Foundations of Global Navigation Satellite Systems (list online lessons)
A Permanent Mark of Public Interest
- durable, stable setting, with good satellite visibility
- add description & photos to aid future recovery
- preview the description form and help file
A High-Quality OPUS Solution
- ? 70% observations used & ambiguities fixed
- ?? 3 cm RMS
- ?? 4 cm peak-to-peak error ranges, lat. & lon.
- ?? 8 cm peak-to-peak error range, el. hgt.
Ok, I didn't read far enough to see that it does list the same numbers for sharing as my error report.
So if everything is good but 50% ambiguities fixed, it is "most accurate" but can't be shared, and if everything is good but 70% observations use it isn't "most accurate" but can still be shared.?ÿ Also 5 cm pk-pk is "most accurate" but can't be shared.
Inconsistent.
I'm not too worried about it. You appear to be interjecting the word "The" in front of the phrase "most accurate"- thus changing the meaning. I feel a correct understanding of the phase "most accurate solutions"?ÿwould be to construe it to be infer that a generally accurate and acceptable solution has the following qualities.... and you can probably use it -?ÿbut you can use your solution anyway you see fit... do whatever your career can stand.
NGS then delineates the criteria for solutions which they will allow to be shared on their website.?ÿ The numbers are different.?ÿ that's ok it's their sandbox.